Shuttle-operating mechanism.



G. F. ARNOLD.

SHUTTLE OPERATING MECHANISM.

APPLIOATION FILED JUN}; 9, 1908.

942,698, Patented Dec. :7, 1909-.

Unitarian snares PATENT @FFIQE.

CLARENCE F. ARNOLD, 01E PHILADELPHIA, PENNSYLVANIA.

SHUTTLE-OPERATING: MECHANISM.

To all whom it may concern:

Be it known that I, CLARENCE F. ARNOLD, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Shuttle-Operating Mechanism, ,of which the following is a specification.

My invention relates to looms for weaving ribbons or narrow fabrics, and it consists of an improved form of high speed, shuttle driving mechanism. In such looms, motion is imparted to-the shuttles by means of a sliding rod having projections for engagement with said shuttles, such rod having movement imparted to it at one end of the loom. The common or usual method of operating-this rod is to employ straps or cords and weights,-with suitable tripping mechanism to enable the weights to accomplish their work. These straps or cords and weights, however, have proved obj'ectionable, particularly in the wearing out and stretching of the straps and cords. and I propose to actuate the shuttle moving bar by means of an arm operated by a revolvmg cam, by which means I am enabled to effect smooth running at very high speed.

My invention is fully shown in the accompanying drawings, in which: a

Figure l, is an end elevation of a narrowware loom illustrating the application of my improved shuttle driving mechanism thereto; Fig. 2, is a front elevation of one end of the loom; Fig. 3, is a perspective view illustrating a detail of my invention, and Fig. 4, is a view of a modification of my invention.

In the drawings, 1 represents a shaft driven by means of gears 2, 3, 4 and 5, from a main driving shaft 6, and said shaft 1' carries a disk 7 having cams 8 on opposite sides of the same. The moving lay of the loom is indicated at 9, and this is reciprocated back and forth by a crank connection 10'carried by a pulley 11; the lay being carried in the usual manner by arms 12 pivoted at 13 near the base of the structure. The lay is grooved at 14 for the reception of a bar 15 for o erating the shuttles 16;-

said bar having pins 17 adapted to engage said shuttles. At the end of the bar 15, a bracket 18 is secured, slotted at 19 and arranged to slide on email 20 carried by said lay.

Pivotally mounted ona stud 21 supported in suitable bearings 22- carried by the frame of the loom, isan' arm 23 having a project- Specification of Letters Yatent. Patented Dec. '7, 196%., Application filed June 9, 190a.

Serial No. %37,524.

ing portion 24, preferably carrying an antifriction sleeve and lying in the slot 19 of the bracket 18. Carried also by said stud 21 and maintained in engagement with the disk 7 are curved and double ended levers 25 and 26,

will be rocked on the stud 21 by the engagement of the end walls of the lever slots 28 with the pin 29 carried by'said arm and will move the bracket 18 attached to the bar 15. The pins 17 of said bar will thereby engage the shuttles 16 and carry them back and forth between the shed of the warp threads, laying the weft threads thereint The use of the'rail 20 carried by the lay, upon which the bracket 18 slides, prevents the twisting or rocking of the bar 15 for operating the shuttles, as the lay is reciprocated back and forth in engagement with the projecting portion 24.

The advantage of the slots 28 in the upper ends of the levers 25 and 26 is, that if the loom should happen to, stop with theshuttles lying part way through the shed, the operator can readily bring the shuttles to the right position by merely pushing the bar 15 in either direction so as to bring the pins 17 in proper position with relation to the shuttles. The slots in the levers also provide for a certain amount of lost motion between the engaging parts of said-slots and the pin 29 of the arm 23.

It is desirable in a structure of this kind, in order to prevent breakage of the weft threads, to commence the movement of said shuttles gradually, and then increase it. To accomplish this, I give the cams 8 quite a long incline on the side first in engagement or groove 8"-, formed in a drum 7, which may be mounted on a suitable shaft, and

ing arm in operative engagement with said shuttle actuating-bar, means including rotating cams carried by the countershaft and pivoted levers engaged thereby for actuating.

said oscillating arm, and means permitting lost motion between the levers and the said" arm whereby the engagement of said levers with said armis in the nature of a quick, sharp blow.

2. In a shuttle motion for narrow fabric looms, the combination with the driving shaft of a loom, the lay, and means for I operating the latter from said shaft, of a shuttle-actuating-bar slidably mounted in said lay, an oscillating arm pivoted to the loom frame and in operative engagement with the shuttle-actuating-bar, levers in operative engagement with said arm on opposite sides of the same for imparting movement .thereto in two directions, a countershaft actuated by said driving shaft, rotating cams carried'by said countershaft for actuating said levers whereby the arm is caused to reciprocate the shuttle-actuatingbar in' the lay, and means permitting lost motion between the levers and the said arm.

whereby the engagement of said levers with said arm is in the nature of a quick, sharp blow.

I 3. In a shuttle motion for narrow fabric looms, the combination with the driving shaft of a loom, the lay and means for operating the latter from said shaft, of a sh'uttle-actuating-bar slidably mounted in said lay, an arm pivoted to the'loom frame and in engagement with the shuttle-actuating'bar, levers in operative engagement with said arm on opposite sides of the same'for imparting movement thereto in two directions, a 'countershaft actuated by said driving shaft, cams carried by said countershaft for actuating said. levers. whereby the shuttl'e-actuating-bar may be reciprocated in the lay, and tension means connecting said levers whereby. one end oiieach of the same is maintained in contact with the cams.

4. In a shuttle motion for narrow fabric looms, the combination with the driving shaft of a loom, the lay and'means for operating the latter from said shaft, of a shuttleactuating-'bar slidably mounted in said lay, a-series of shuttles carried by the lay, means on said bar for engagement with the shuttles, a slotted guide carried by said bar, an arm pivoted to the loom frame and having a portion in engagementwith said shuttle-actuatingbar slidably mounted in said lay, a series of shuttles carried by the lay, means on said bar for engagement with the shuttles, a slotted guide carried bysaid bar, an arm pivoted to the loom and having a portion in engagement with said guide, a countershaft, means for actuating said countershaft from the driving shaft, a disk carried by said countershaft, and means includ-v ing rotating cams carried by said disk for actuating said arm whereby the bar may be reciprocated in the lay and actuate the shuttles in opposite directions.

6. In a shuttle motion for narrow fabric looms, the combination with the driving shaft of a loom, the lay and means for operating the latter from said shaft, of a shuttle-actuating-bar slidably mounted in said 'lay,.a series of shuttles carried by the lay, means on said bar for engagement with the shuttles, a slotted guide icarried by said bar, anarm pivoted to the loom' and in engagement with said guide, levers journaled on the same axis as said arm, a countershaft, means for actuating the latter from the driving shaft, and cams carried by said countershaft for operating said arm through the medium of the levers whereby the bar may be reciprocated in the lay to actuate the shut tles in opposite directions. Y

g 7. In a shuttle motion for narrow fabric looms, the combination with the driving shaft ofa loom, the lay and'means for operating the latter from said shaft, of a shuttle actuating bar slidably mounted in said lay, a series of shuttlescarried by the lay, pins carried by said bar for engagement with the shuttles, a slotted guide carried by said bar, an arm pivoted to the loom and in engagement with said guide, levers jour-' naled on the same axis as said arm, a countershaft, means for actuating the latter from the drlving shaft, a disk on said countershaft, and cams carried by said disk for operating said arm through the medium of the levers whereby the bar may be reciprocatcd in the lay to actuate the shuttles in opposite directions.

8. In a shuttle motion for narrow fabric looms, the combination! with the driving shaft of a loom, the lay and means for operating the latter-from said shaft, of a shuttleactuating-bar slidably mounted in cams carried by the countershaft for movsaid lay, a series of shuttles carried by the lay, means on said bar for engagement with said shuttles. an arm pivotally mounted on the loom and arranged to engage and move said shuttle-actuating-bar, a counter-shaft actuated by a driving shaft, cams carried by said counter shaft. lOVQlS in operative engagement with said arm, said levers being actuated by said cams to oscillate the arm and cause it to reciprocate the shuttle-actuating bar in the lay to move the shuttle in opposite directions, and means permitting lost motion between the levers and the said arm whereby the engagement of said levers with said arm is in the nature of a quick, sharp blow; said cams having a gradual incline for first and a sharp incline for final engagement by the levers so that the initial movement of the slnittle-actuating-bar will be relatively slower than its final movement.

9. In a shuttle motion for narrow fabric 'looms. the combination with thedriving shaft of a loom. the lay and means for opbar may be reciprocated .in the lay to actuate the shuttles in opposite directions, and means permitting lost motion between the levers and the said arm whereby the engagement of said levers with said arm is in the nature of a quick, sharp blow; said cams having a gradual incline for first and a sharp incline for final engagement by thelevers so that the initial movement of the slnittle-actuatingbar will be. relatively slower than its final movement.

10. In a shuttle motion for narrow fabric looms, the combination with the driving" shaft of a loom, the lay and means for operating the latter from said shaft, of a shuttleactuating-bar slidably mounted in said lay, a series of shuttles carried by the lay, pins on the bar for engagement with said shuttles, an arm pivotally mounted on the loom and arranged to engage and move said shuttleactuatingbar, projections carried by said arm, levers mounted on the same axis as said arm, said levers being slotted for the passage of the projections carried by the arm, a countershaft actuated by the driving shaft, and

mg the levers, the latter serving to actuate the arm by the engagement of the end walls of their slots with the projections carried, by said arm whereby the bar may be reciprocated in the lay to drive the shuttles in. opposite directions.

11. In a shuttle motion for narrow fabric looms, the combination of the lay, a shuttleactuating-bar slidably mounted therein, an oscillating arm pivotally mounted on the loom frame for actuating said bar, levers in operative engagement with and pivotally mounted on the same axis as said arm for actuating the latter in opposite directions, cams for actuating said levers whereby the arm may be moved to reciprocate said shuttle-actuating-bar, means for ope'ating said cams, and means permitting lost motion between the levers and the said arm whereby the engagement of said levers with said arm is in the nature of a quick, sharp blow.

12. In a shuttle motion for narrow fabric looms, the combination of the lay, a shuttle actuating bar slidably mounted therein, a pivotally mounted arm for actuating said bar, levers pivotally mounted on the same axis as said arm for imparting movement in opposite directions thereto, cams for actuating said levers whereby the arm may be driven to reciprocate said shuttle actuating bar, means for operating said cams, and means permitting lost motion between the levers and the said arm whereby the engagement of said levers with said arm is in the nature of a quick, sharp blow.

13. In a shuttle motion for narrow fabric looms, the combination of the lay, a shuttleactuating-bar slidably mounted therein, an oscillating arm pivotally mounted on the loom frame for actuating said bar, levers in operative engagement, with and pivotally mounted on the same axis as said arm for imparting movement to the latter in opposite directions, cams for actuating said levers whereby the arm is caused to reciprocate said shuttle-actuating-bar, a main driving shaft, a countershaft driven therefrom and carrying said cams, and means permitting lost motion between the levers and the i said arm whereby the engagement of said levers with said arm is in the nature of a quick, sharp blow.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

CLARENCE F. ARNOLD.

Witnesses:

MURRAY C. BoYER, Jos. H. KLEIN. 

